CN112303252A - Stop valve - Google Patents
Stop valve Download PDFInfo
- Publication number
- CN112303252A CN112303252A CN202011161878.5A CN202011161878A CN112303252A CN 112303252 A CN112303252 A CN 112303252A CN 202011161878 A CN202011161878 A CN 202011161878A CN 112303252 A CN112303252 A CN 112303252A
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- CN
- China
- Prior art keywords
- valve
- rod
- positioning
- shaped
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 230000008676 import Effects 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 petrifaction Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention relates to a stop valve, comprising: the valve body with set up in valve gap on the valve body middle part, be provided with import runner, lumen and export runner in the valve body, be located in the valve body the exit end of import runner is provided with the disk seat, set up on the disk seat with the fluid passage of import runner intercommunication each other, the stop valve still includes: the invention relates to a transmission rod, a rotating sleeve, an adjusting rod, an L-shaped supporting piece and a valve clack assembly, which has the advantages that: through setting up the valve clack subassembly for the valve clack is when not sealed fluid passage, is covered by the backplate, thereby can avoid the valve clack to be strikeed by the medium, has improved the life of valve clack, has reduced the maintenance cost of stop valve.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a stop valve.
Background
The stop valve is a valve with a valve clack moving along the central line of a valve seat and mainly plays a role in cutting off a pipeline. Because the friction force between the sealing surfaces is small, the opening height is small, the manufacturing cost is low and the like in the opening and closing process, the valve is widely applied to the fields of petroleum, petrifaction, chemical industry, metallurgy, electric power, water conservancy, urban construction, fire control, machinery, coal, food, ships, power stations, ocean engineering and the like. The existing stop valve has the following problems in the use process: when the valve port of the existing stop valve is opened, a medium flowing at a high speed can scour the valve clack, long-time scouring can cause damage to a sealing element of the valve clack, leakage is generated when the valve clack is closed, and the using effect and the service life of the stop valve are influenced.
Disclosure of Invention
In view of the above, it is necessary to provide a shutoff valve capable of protecting a valve flap when the valve flap is not in operation.
The invention discloses a stop valve, which comprises: the valve body with set up in valve gap on the valve body middle part, be provided with import runner, lumen and export runner in the valve body, be located in the valve body the exit end of import runner is provided with the disk seat, set up on the disk seat with the fluid passage of import runner intercommunication each other, the stop valve still includes:
the transmission rod is connected with the valve cover, can slide along the vertical direction and cannot rotate relative to the valve cover, a communication hole is formed in the middle of the transmission rod, and an expansion section is formed in the upper end of the communication hole;
the rotating sleeve is rotatably connected to the valve cover;
the adjusting rod penetrates through the middle of the transmission rod and can slide along the vertical direction, a threaded section is arranged on the adjusting rod and is in threaded connection with the rotating sleeve, a butting ring is arranged on the adjusting rod and can slide in the expansion section, and a connecting bulge is arranged at the lower end of the adjusting rod;
the L-shaped support piece is fixedly connected to the lower end of the transmission rod and comprises a first support part extending along the vertical direction and a second support part extending along the horizontal direction, a limiting sliding groove is formed in the first support part along the vertical direction, the connecting protrusion can slide up and down along the limiting sliding groove, and an arc-shaped sliding groove is formed in the second support part;
the valve clack assembly comprises a connecting rod, a T-shaped connecting piece, a first connecting shaft, a protective plate, a valve clack, a second connecting shaft, a first L-shaped supporting rod and a second L-shaped supporting rod, wherein one end of the connecting rod is hinged to the connecting bulge, the other end of the connecting rod is hinged to the T-shaped connecting piece, a connecting groove is formed in the T-shaped connecting piece, the first connecting shaft penetrates through one end of the first L-shaped supporting rod, the connecting groove, an arc-shaped sliding groove and one end of the second L-shaped supporting rod, the other end of the first L-shaped supporting rod is hinged to the protective plate and the other end of the second L-shaped supporting rod is hinged to the valve clack, the protective plate is hinged to the valve clack through the second connecting shaft, the second connecting shaft is further rotatably connected with the T-shaped;
the rotating sleeve is rotated in the forward direction, so that the adjusting rod can move downwards, the valve clack and the protective plate of the valve clack assembly are driven to be unfolded, the valve clack moves to the position above the fluid channel of the valve seat, the rotating sleeve is rotated in the forward direction continuously, the abutting ring abuts against the lower end of the expansion section, the transmission rod is driven to move downwards, and the valve clack assembly moves downwards to close or open the fluid channel.
In one embodiment, a first positioning assembly is arranged on the valve seat, a first positioning groove is arranged on the transmission rod, the first positioning assembly comprises a first positioning ball and a first elastic piece, and when the valve clack assembly is located at the highest position, the first positioning ball can be clamped into the first positioning groove under the action of the first elastic piece.
In one embodiment, a second positioning assembly is arranged on the L-shaped supporting member, the second positioning assembly includes a second positioning ball and a second elastic member, the adjusting rod is provided with a second positioning groove and a third positioning groove, when the valve flap and the guard plate are in the fitting state, the second positioning ball can be clamped into the second positioning groove under the action of the second elastic member, and when the valve flap and the guard plate are in the opening state of 180 degrees, the second positioning ball can be clamped into the third positioning groove under the action of the second elastic member.
In one embodiment, the transmission rod is provided with a connecting sliding block, the valve cover is provided with a connecting groove along the vertical direction, and the connecting sliding block can slide up and down along the connecting groove.
In one embodiment, the stop valve further comprises a handle fixedly connected with the rotating sleeve.
The invention has the advantages that: through setting up the valve clack subassembly for the valve clack is when not sealed fluid passage, is covered by the backplate, thereby can avoid the valve clack to be strikeed by the medium, has improved the life of valve clack, has reduced the maintenance cost of stop valve.
Drawings
FIG. 1 is a cross-sectional view of a shut-off valve provided by the present invention;
FIG. 2 is a cross-sectional view of another operational state of a stop valve provided by the present invention;
FIG. 3 is a cross-sectional view of another operational state of a shut-off valve provided by the present invention;
FIGS. 4 to 6 are perspective views of a part of the structure of a stop valve provided by the present invention;
fig. 7 is a partial enlarged view of fig. 2 a according to the present invention.
In the figure, a valve body 1, an inlet flow passage 11, a middle chamber 12, an outlet flow passage 13, a valve cover 2, a guide sliding groove 21, a valve seat 3, a fluid passage 31, a transmission rod 4, a communication hole 41, an expansion section 42, a connecting slide block 43, a first positioning groove 44, a rotating sleeve 5, a handle 51, an adjusting rod 6, a threaded section 61, a butting ring 62, a connecting protrusion 63, a second positioning groove 64, a third positioning groove 65, an L-shaped support member 7, a first support portion 71, a limiting sliding groove 711, a second support portion 72, an arc-shaped sliding groove 721, a valve clack assembly 8, a connecting rod 81, a T-shaped connecting member 82, a connecting groove 821, a first connecting shaft 83, a guard plate 84, a valve clack 85, a second connecting shaft 86, a first L-shaped support rod 87, a second L-shaped support rod 88, a first positioning ball 911, a first elastic member 912, a second.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 7, the present invention discloses a shut-off valve, which includes: valve body 1 with set up in valve gap 2 of 1 middle part upper end of valve body, be provided with inlet channel 11, lumen 12 and exit runner 13 in the valve body 1, lie in the valve body 1 the exit end of inlet channel 11 is provided with disk seat 3, set up on the disk seat 3 with the fluid passage 31 of 11 mutual intercommunications of inlet channel, the stop valve still includes:
the transmission rod 4 is connected with the valve cover 2, can slide along the vertical direction and cannot rotate relative to the valve cover 2, a communication hole 41 is formed in the middle of the transmission rod 4, and an expansion section 42 is formed at the upper end of the communication hole 41;
the rotating sleeve 5 is rotatably connected to the valve cover 2;
the adjusting rod 6 penetrates through the middle of the transmission rod 4 and can slide along the vertical direction, a threaded section 61 is arranged on the adjusting rod 6, the threaded section 61 is in threaded connection with the rotating sleeve 5, a butting ring 62 is arranged on the adjusting rod 6, the butting ring 62 can slide in the expansion section 42, and a connecting protrusion 63 is arranged at the lower end of the adjusting rod 6;
the L-shaped support 7 is fixedly connected to the lower end of the transmission rod 4, the L-shaped support 7 includes a first support part 71 extending along the vertical direction and a second support part 72 extending along the horizontal direction, a limit sliding groove 711 is formed in the first support part 71 along the vertical direction, the connecting protrusion 63 can slide up and down along the limit sliding groove 711, and an arc-shaped sliding groove 721 is formed in the second support part 72;
as shown in fig. 4 to 6, the valve flap assembly 8 includes a connecting rod 81, a T-shaped connecting member 82, a first connecting shaft 83, a protecting plate 84, a valve flap 85, a second connecting shaft 86, a first L-shaped supporting rod 87, and a second L-shaped supporting rod 88, one end of the connecting rod 81 is hinged to the connecting protrusion 63, the other end is hinged to the T-shaped connecting member 82, a connecting groove 821 is formed on the T-shaped connecting member 82, the first connecting shaft 83 simultaneously passes through one end of the first L-shaped supporting rod 87, the connecting groove 821, an arc-shaped sliding groove 721, and one end of the second L-shaped supporting rod 88, the other end of the first L-shaped supporting rod 87 is hinged to the protecting plate 84 and the other end of the second L-shaped supporting rod 88, the protecting plate 84 is hinged to the valve flap 85 through the second connecting shaft 86, and the second connecting shaft 86 is further rotatably connected to the T-shaped connecting, the second connecting shaft 86 is arranged in parallel with the first connecting shaft 83;
by rotating the rotating sleeve 5 forward, the adjusting rod 6 can be moved downward, so as to drive the valve flap 85 and the guard plate 84 of the valve flap assembly 8 to unfold, so that the valve flap 85 moves above the fluid passage 31 of the valve seat 3, and the rotating sleeve 5 is rotated forward continuously, so that the abutting ring 62 abuts against the lower end of the expansion section 42, so as to drive the transmission rod 4 to move downward, so that the valve flap assembly 8 moves downward, so as to close or open the fluid passage 31.
Preferably, as shown in fig. 7, a first positioning assembly is arranged on the valve seat 3, a first positioning groove 44 is arranged on the transmission rod 4, the first positioning assembly includes a first positioning ball 911 and a first elastic member 912, and when the valve flap assembly 8 is located at the highest position, the first positioning ball 911 can be clamped into the first positioning groove 44 under the action of the first elastic member 912.
Preferably, the L-shaped supporting member 7 is provided with a second positioning assembly, the second positioning assembly includes a second positioning ball 921 and a second elastic member 922, the adjusting rod 6 is provided with a second positioning groove 64 and a third positioning groove 65, when the valve flap 85 is in the fitting state with the guard plate 84, the second positioning ball 921 is in the second elastic member 922 can be clamped into the second positioning groove 64, when the valve flap 85 is in the 180-degree opening state with the guard plate 84, the second positioning ball 921 is in the second elastic member 922 can be clamped into the third positioning groove 65.
Preferably, the transmission rod 4 is provided with a connecting slide block 43, the valve cover 2 is provided with a guide sliding groove 21 along the vertical direction, and the connecting slide block 43 can slide up and down along the guide sliding groove 21.
Preferably, the stop valve further comprises a handle 51, and the handle 51 is fixedly connected with the rotating sleeve 5.
The working mode of the invention is as follows: as shown in fig. 1, the valve flap 85 is attached to the protection plate 84, the adjusting lever 6 can be driven to move downward by rotating the handle 51 forward, the second positioning ball 921 is separated from the second positioning groove 64, the abutting ring 62 slides along the expansion section 42, the connecting protrusion 63 slides along the limiting sliding groove 711, it should be noted that the limiting sliding groove 711 abuts against the front and rear sides of the connecting protrusion 63, so as to limit the rotation of the adjusting lever 6, the connecting slider 43 moves downward, the connecting rod 81 is driven to rotate clockwise, the T-shaped connecting member 82 is driven to rotate counterclockwise, the first connecting shaft 83 moves along the connecting groove 821 and the arc-shaped sliding groove 721 simultaneously, the distance between the first connecting shaft 83 and the second connecting shaft 86 is increased, the included angle between the protection plate 84 and the valve flap 85 is increased by pulling the first L-shaped supporting rod 87 and the second L-shaped supporting rod 88, as shown in fig. 2 and 3, when the abutting ring 62 abuts against the lower end of the expansion section 42, the valve flap 85 moves to above the fluid passage 31 of the valve seat 3, and the second positioning ball 921 is snapped into the third positioning groove 65. Continuing to rotate the handle 51 in the forward direction, the first positioning ball 911 is disengaged from the first positioning groove 44, so that the adjustment lever 6 pushes the transmission rod 4 to move downward, and the valve flap 85 moves downward, thereby closing the fluid passage 31.
When the stop valve needs to be opened, the handle 51 is rotated reversely, because the second positioning ball 921 is clamped with the third positioning groove 65 at this time, the adjusting rod 6 and the transmission rod 4 are kept relatively still, the transmission rod 4 moves upwards, the first positioning ball 911 is clamped into the first positioning groove 44 again, the handle 51 is rotated reversely continuously, the second positioning ball 921 is separated from the third positioning groove 65, the adjusting rod 6 moves upwards relative to the transmission rod 4, the connecting rod 81 is pulled, the T-shaped connecting piece 82 is driven to rotate clockwise, the valve clack 85 and the protection plate 84 are driven to be closed, and the second positioning ball 921 is clamped into the second positioning groove 64 at this time.
It should be noted that the first positioning assembly requires a larger vertical force than the second positioning assembly to separate the first positioning ball 911 from the first positioning groove 44, so that the second positioning ball 921 is separated from the second positioning groove 64 first when the adjustment lever 5 moves downward.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. A shut-off valve, said shut-off valve comprising: the valve body with set up in valve gap on the valve body middle part, be provided with import runner, lumen and export runner in the valve body, be located in the valve body the exit end of import runner is provided with the disk seat, set up on the disk seat with the fluid passage of import runner intercommunication each other, the stop valve still includes:
the transmission rod is connected with the valve cover, can slide along the vertical direction and cannot rotate relative to the valve cover, a communication hole is formed in the middle of the transmission rod, and an expansion section is formed in the upper end of the communication hole;
the rotating sleeve is rotatably connected to the valve cover;
the adjusting rod penetrates through the middle of the transmission rod and can slide along the vertical direction, a threaded section is arranged on the adjusting rod and is in threaded connection with the rotating sleeve, a butting ring is arranged on the adjusting rod and can slide in the expansion section, and a connecting bulge is arranged at the lower end of the adjusting rod;
the L-shaped support piece is fixedly connected to the lower end of the transmission rod and comprises a first support part extending along the vertical direction and a second support part extending along the horizontal direction, a limiting sliding groove is formed in the first support part along the vertical direction, the connecting protrusion can slide up and down along the limiting sliding groove, and an arc-shaped sliding groove is formed in the second support part;
the valve clack assembly comprises a connecting rod, a T-shaped connecting piece, a first connecting shaft, a protective plate, a valve clack, a second connecting shaft, a first L-shaped supporting rod and a second L-shaped supporting rod, wherein one end of the connecting rod is hinged to the connecting bulge, the other end of the connecting rod is hinged to the T-shaped connecting piece, a connecting groove is formed in the T-shaped connecting piece, the first connecting shaft penetrates through one end of the first L-shaped supporting rod, the connecting groove, an arc-shaped sliding groove and one end of the second L-shaped supporting rod, the other end of the first L-shaped supporting rod is hinged to the protective plate and the other end of the second L-shaped supporting rod is hinged to the valve clack, the protective plate is hinged to the valve clack through the second connecting shaft, the second connecting shaft is further rotatably connected with the T-shaped;
the rotating sleeve is rotated in the forward direction, so that the adjusting rod can move downwards, the valve clack and the protective plate of the valve clack assembly are driven to be unfolded, the valve clack moves to the position above the fluid channel of the valve seat, the rotating sleeve is rotated in the forward direction continuously, the abutting ring abuts against the lower end of the expansion section, the transmission rod is driven to move downwards, and the valve clack assembly moves downwards to close or open the fluid channel.
2. The stop valve of claim 1, wherein the valve seat is provided with a first positioning assembly, the transmission rod is provided with a first positioning groove, the first positioning assembly comprises a first positioning ball and a first elastic member, and when the valve clack assembly is located at the highest position, the first positioning ball can be clamped into the first positioning groove under the action of the first elastic member.
3. The stop valve of claim 1, wherein the L-shaped support member is provided with a second positioning assembly, the second positioning assembly includes a second positioning ball and a second elastic member, the adjusting rod is provided with a second positioning groove and a third positioning groove, when the valve flap and the guard plate are in the fitting state, the second positioning ball can be clamped into the second positioning groove under the action of the second elastic member, and when the valve flap and the guard plate are in the opening state of 180 degrees, the second positioning ball can be clamped into the third positioning groove under the action of the second elastic member.
4. The stop valve according to claim 1, wherein the transmission rod is provided with a connecting slide block, the valve cover is provided with a connecting groove along the vertical direction, and the connecting slide block can slide up and down along the connecting groove.
5. The shut-off valve of claim 1, further comprising a handle fixedly connected to the rotating sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011161878.5A CN112303252A (en) | 2020-10-27 | 2020-10-27 | Stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011161878.5A CN112303252A (en) | 2020-10-27 | 2020-10-27 | Stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112303252A true CN112303252A (en) | 2021-02-02 |
Family
ID=74330883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011161878.5A Pending CN112303252A (en) | 2020-10-27 | 2020-10-27 | Stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112303252A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113124171A (en) * | 2021-04-13 | 2021-07-16 | 俞伟光 | Scour prevention stop valve |
| CN113217636A (en) * | 2021-04-01 | 2021-08-06 | 陈玉霞 | Stop valve |
| CN113251159A (en) * | 2021-05-26 | 2021-08-13 | 陆诗雨 | Stop valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289157A (en) * | 2016-04-01 | 2017-10-24 | 上海中航阀门有限公司 | A kind of low-pressure drop check valve |
| CN207814561U (en) * | 2017-12-29 | 2018-09-04 | 浙江天特阀门有限公司 | Once-through type turns round flap screw down nonreturn valve |
| CN109139938A (en) * | 2018-10-24 | 2019-01-04 | 温州职业技术学院 | A kind of shut-off valve |
| CN110886861A (en) * | 2019-12-10 | 2020-03-17 | 王鑫 | Valve for petroleum pipeline |
| CN111720564A (en) * | 2020-06-24 | 2020-09-29 | 张文波 | Stop valve |
-
2020
- 2020-10-27 CN CN202011161878.5A patent/CN112303252A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289157A (en) * | 2016-04-01 | 2017-10-24 | 上海中航阀门有限公司 | A kind of low-pressure drop check valve |
| CN207814561U (en) * | 2017-12-29 | 2018-09-04 | 浙江天特阀门有限公司 | Once-through type turns round flap screw down nonreturn valve |
| CN109139938A (en) * | 2018-10-24 | 2019-01-04 | 温州职业技术学院 | A kind of shut-off valve |
| CN110886861A (en) * | 2019-12-10 | 2020-03-17 | 王鑫 | Valve for petroleum pipeline |
| CN111720564A (en) * | 2020-06-24 | 2020-09-29 | 张文波 | Stop valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217636A (en) * | 2021-04-01 | 2021-08-06 | 陈玉霞 | Stop valve |
| CN113124171A (en) * | 2021-04-13 | 2021-07-16 | 俞伟光 | Scour prevention stop valve |
| CN113124171B (en) * | 2021-04-13 | 2022-06-21 | 君品集团有限公司 | Scour prevention stop valve |
| CN113251159A (en) * | 2021-05-26 | 2021-08-13 | 陆诗雨 | Stop valve |
| CN113251159B (en) * | 2021-05-26 | 2023-08-22 | 天津市中核科技实业有限公司 | Stop valve |
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Application publication date: 20210202 |